Macroscopic quantum coherence in spinor condensates confined in an anisotropic potential

Abstract

We investigate the macroscopic quantum coherence of a spin-1 Rb condensate confined in an anisotropic potential. Under the single-mode approximation, we show that the system can be modeled as a biaxial quantum magnet due to the interplay between the magnetic dipole-dipole interaction and the anisotropic potential. By applying a magnetic field along the hard-axis, we show that the tunneling splitting oscillates as a function of the field strength. We also propose an experimental scheme to detect the oscillatory behavior of the tunneling splitting by employing the Landau-Zener tunneling.

5 pages, 4 figures

References in corpus (3)

• Single-molecule Nanomagnets
• Spontaneous spin textures in dipolar spinor condensates
• Quantum tunneling of magnetization in dipolar spin-1 condensates under external fields

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• Preserving coherent spin and squeezed spin states of a spin-1 Bose-Einstein condensate with rotary echoes
• Rebuilding of destroyed spin squeezing in noisy environments
• Dynamical Zeeman resonance in spin-orbit-coupled spin-1 Bose gases
• Critically-enhanced spin-nematic squeezing and entanglement in dipolar spinor condensates